Baking soda neutralizes the ph in the soil and is a natural weed killer. Sprinkle baking soda around all of the edges of garden areas to keep the grass and weeds from growing into flower beds. Just lightly cover the soil twice a year – spring and fall.
"I'm actually using this in my yard right now and it works. A bit slower than Roundup but much better for the environment. Kills weeds in about 48 hours. I don't use Dawn instead we use Seventh Generation dish soap." Green Round Up weed killer